Described herein are compositions that can include Compound 1 or Form J of Compound 1, or a pharmaceutically acceptable salt of the aforementioned compounds. Also, described herein is a method of treating a HCV infection in a subject that can include administering to the subject a composition that includes Compound 1 or Form J of Compound 1, or a pharmaceutically acceptable salt of the aforementioned compounds.本說明書中所述者為可包括化合物1或化合物1之形式J或前述化合物之一醫藥上可接受鹽的組成物。再者,本說明書中所述者為一種治療一對象中之一HCV感染的方法,該方法可包括投予該對象一包括化合物1或化合物1之形式J或前述化合物之一醫藥上可接受鹽的組成物。